描述 Description

The SRC4190 device is an asynchronous sample rate converter designed for professional and broadcast audio applications. The SRC4190 combines a wide input-to-output sampling ratio with outstanding dynamic range and low distortion. Input and output serial ports support standard audio formats, as well as a Time Division Multiplexed (TDM) mode. Flexible audio interfaces allow the SRC4190 to connect to a wide range of audio data converters, digital audio receivers and transmitters, and digital signal processors.
The SRC4190 is a standalone pin-programmed device, with control pins for mode, data format, mute, bypass, and low group delay functions.
The SRC4190 may be operated from a single 3.3-V power supply. A separate digital I/O supply (VIO) operates with a 1.65-V to 3.6-V supply, allowing greater flexibility when interfacing to current and future generation signal processors and logic devices. The SRC4190 is available in a 28-pin SSOP package.

特性 Features

? Automatic Sensing of the Input-to-Output Sampling Ratio
? Wide Input-to-Output Sampling Range: 16:1 to 1:16
? Supports Input and Output Sampling Rates up to 212 kHz
? Dynamic Range: 128 dB (–60-dB fS Input, BW = 20 Hz to fS / 2, A-Weighted)
? THD+N: –125 dB (0-dB fS Input, BW = 20 Hz to fS / 2)
? Attenuates Sampling and Reference Clock Jitter
? High-Performance, Linear Phase Digital Filtering
? Flexible Audio Serial Ports:
- Master or Slave Mode Operation Supports I2S, Left Justified, Right Justified, and TDM Data Formats
? Supports 16-, 18-, 20-, or 24-Bit Audio Data, TDM Mode Allows Daisy Chaining of up to Eight Devices
? Supports 24-, 20-, 18-, or 16-Bit Input and Output
- All Output Data is Dithered from the Internal 28-Bit Data Path
? Low Group Delay Option for Interpolation Filter
? Soft Mute Function
? Bypass Mode
? Power-Down Mode
? Operates from a Single 3.3-V Power Supply
? Small 28-Pin SSOP Package
? Pin Compatible With the SRC4192, AD1895, and AD1896 U.S. Patent No. 7,262,716 Seefor details.